Options Used within iptables Commands", Expand section "18.3.4. iptables Match Options", Collapse section "18.3.4. iptables Match Options", Expand section "18.5. iptables Control Scripts", Collapse section "18.5. iptables Control Scripts", Expand section "18.7. Network Services Reference", Collapse section "II. Directories within /proc/", Collapse section "5.3. Additional Resources ", Expand section "22. . All rights reserved. Mail Transport Protocols", Collapse section "11.1.1. Boot Loaders and System Architecture, 3.2. Fetchmail Configuration Options, 11.3.3.6. Now that the zone file is setup and resolving names to IP Adresses a Reverse zone is also required. More Than a Secure Shell", Expand section "20.7. ins.style.display='block';ins.style.minWidth=container.attributes.ezaw.value+'px';ins.style.width='100%';ins.style.height=container.attributes.ezah.value+'px';container.appendChild(ins);(adsbygoogle=window.adsbygoogle||[]).push({});window.ezoSTPixelAdd(slotId,'stat_source_id',44);window.ezoSTPixelAdd(slotId,'adsensetype',1);var lo=new MutationObserver(window.ezaslEvent);lo.observe(document.getElementById(slotId+'-asloaded'),{attributes:true});Zone File is a file on a name server that contains information that defines the zone that the name server manages. Network Services Reference", Expand section "8.2. Configuration Directives in httpd.conf", Collapse section "10.5. PAM Configuration File Format", Expand section "16.3.1. PAM and Administrative Credential Caching, 17.4.3. The GRUB Boot Loader", Expand section "2.7. Server Security Mode (User-Level Security), 14.5. Additional Resources", Expand section "20.3. Zone files are stored in the "named" working directory (/var/named/) by default, and can be exported from your DNS provider. Additional Resources", Expand section "3. Module Interface", Expand section "16.6. Users have suggested that I include a real example of a working domain as well as the tutorial example. GRUB Menu Configuration File", Expand section "2.9. Lightweight Directory Access Protocol (LDAP), 13.3.2. The named.conf File. There's not much more to it than that. OpenLDAP Setup Overview", Expand section "13.7. Mail Delivery Agents", Collapse section "11.4. Options Used within iptables Commands, 18.3.4.4. Ethernet Parameters", Expand section "22.5.2. Samba Network Browsing ", Collapse section "14.6. Pluggable Authentication Modules (PAM)", Collapse section "16. The most commonly used namespace is that of the Internet, indicated by parameter IN, but others exist and are in use, e.g., CHAOS. Special File Locations Under Red Hat Enterprise Linux, 4.1. Starting Multiple Copies of vsftpd, 15.5.2. Open the Bind configuration file into a text editor. Additional Resources", Collapse section "13.9. It may be omitted, in which case the resulting value will be set from the default TTL (if defined) or from the preceding record. Domain . Introduction to DNS", Collapse section "12.1. Copyright 20012022, NLnet Labs. Keep your systems secure with Red Hat's specialized responses to security vulnerabilities. Finding Appropriate Documentation", Expand section "2.1. Starting and Stopping vsftpd", Expand section "15.5. vsftpd Configuration Options", Collapse section "15.5. vsftpd Configuration Options", Expand section "15.6. This is typically used for the apex of a zone. TCP Wrappers Configuration Files", Expand section "17.2.1. Where we list some real zone files. named-compilezone is similar to named-checkzone, but it always dumps the zone contents to a specified file in a specified format. A Red Hat training course is available for Red Hat Enterprise Linux. Common Statement Types", Collapse section "12.2.1. The Channel Bonding Module", Expand section "22.6. A Detailed Look at the Boot Process", Collapse section "1.2. A zone file is a sequence of line-oriented entries, each of which is either a directive or a text description that defines a single resource record (RR). You use rndc to tell the server to pick up the new zone, or you stop and restart your server. Modules and Apache HTTP Server 2.0", Expand section "10.5. An example of a zone file for the domain example.com is the following: At minimum, the zone file must specify the Start of Authority (SOA) record with the name of the authoritative master name server for the zone and the email address of someone responsible for management of the name server (represented as a domain name, with a full stop character in place of the usual @ symbol). Additional Resources", Collapse section "6.6. In this example the FQDN is: example.com..This is in contrast to relative domain names, where the origin gets appended (so in the example below, www gets expanded to www . Samba Server Types and the smb.conf File ", Collapse section "14.3. A free standing @ is used to denote the current origin. Additional Resources", Collapse section "5.5. Web 3.0 is the next generation of Internet technology that heavily relies on machine learning, artificial intelligence (AI), and blockchain technology. Samba Account Information Databases ", Collapse section "14.5. Main Server Configuration", Expand section "10.2.4. The X Window System", Expand section "7.2. The BIND file format is the industry preferred zone file format and has been widely adopted by DNS server software. Example Zone File. A zone needs a SOA (Source Of Authority) record. Directories within /proc/", Expand section "5.3.1. Additional Resources", Expand section "II. It contains the name of the zone, the e-mail address of the party responsible for administering the domain's zone file, the current serial number of the zone, the primary . Configuring a System to Authenticate Using OpenLDAP", Collapse section "13.7. You declare the zone in your named.conf. Altering xinetd Configuration Files", Collapse section "17.4.3. Mail Transport Agents", Expand section "11.4. The data in the named.conf file specifies general configuration characteristics for the name server, defines each zone for which the name server is responsible (its zones of authority), and provides further config information per zone, possibly including the source DOMAIN database file for the zone.. Any database files referenced in the named.conf file must be in the Standard Resource Record . Create Forward Zone File. Start named-chroot service. Example A Dyn Zone File. Configure DNS Server (named.conf) Add zone records. Event Sequence of an SSH Connection, 20.6. A zone needs a SOA (Source Of Authority) record. Primary Domain Controller (PDC) with Active Directory, 14.4.3. User Private Groups", Expand section "6.6. In the zone file, domain names that end with a full stop character (such as "example.com." Starting and Stopping vsftpd", Collapse section "15.4. Additional Resources", Collapse section "20.7. The BIND file format is the industry preferred zone file format and has been widely adopted by DNS server software. A Virtual File System", Expand section "5.2. Ethernet Parameters", Collapse section "22.5. These files were current 24th of September 1996, and were then edited to fit BIND 8 restrictions and use extensions . Additional Resources", Collapse section "7.6. X Server Configuration Files", Collapse section "7.3. Additional Resources", Collapse section "7. Mail Access Protocols", Collapse section "11.1.2. Berkeley Internet Name Domain (BIND)", Collapse section "12. Migrating Old Authentication Information to LDAP Format, 13.8. It also specifies the zones over which the server has authority and which data files it should read to get its initial data. Samba Account Information Databases, 14.6.3. Also note that @ symbol in the zone file refers to the $ORIGIN parameter. If so, the record inherits the field from the previous record. Event Sequence of an SSH Connection", Expand section "20.5. Additional Resources", Expand section "18.3. The format of a zone file is defined in RFC 1035 (section 5) and RFC 1034 (section 3.6.1). A zone file may be either a DNS master file, authoritatively describing a zone, or it may be used to list the contents of a DNS cache.[1]. NFS and portmap", Expand section "9.3. Introduction to DNS", Expand section "12.2.1. The parameters of the SOA record also specify a list of timing and expiration parameters (serial number, slave refresh period, slave retry time, slave expiration time, and the maximum time to cache the record). When manually specified otherwise, the check levels must at least be as strict as . A zone file is referenced by the configuration file of the name server software. Additional Resources", Collapse section "10. Delivering vs. Non-Delivering Recipes, 11.5.1.2. Additional Resources", Expand section "17. Revision 1260e134. In this file, the DNS records of our domain are stored. Additional Resources", Collapse section "9.6. The Boot Loader", Expand section "1.4. Samba Daemons and Related Services", Collapse section "14.2. More Than a Secure Shell", Collapse section "20.5. Documentation For First-Time Linux Users", Collapse section "2.1. ", Expand section "19.7. PAM and Device Ownership", Collapse section "16.7. The root server zone file is called root.servers (typically called named.ca or named.root in BIND distributions). Other Global Environment Changes, 10.2.4. We and our partners share information on your use of this website to help improve your experience. A DNS zone is a subset, often a single domain, of the hierarchical domain name structure of the DNS. Additional Resources", Collapse section "4.3. Files in the /etc/sysconfig/ Directory", Collapse section "4.1. named-checkzone {zonename} {filename} Where, zonename : The domain name of the zone being checked. The Default Postfix Installation, 11.3.3.1. Samba Daemons and Related Services", Collapse section "14.2.1. Configuration Directives for SSL", Collapse section "10.5.66. Lightweight Directory Access Protocol (LDAP)", Collapse section "13. It may be omitted, in which case the resulting value will be set from the preceding record. 17.2.2. PHP4, LDAP, and the Apache HTTP Server, 13.5. The File Transport Protocol", Collapse section "15.1. Active Directory Security Mode (User-Level Security), 14.4.5. Pluggable Authentication Modules (PAM), 16.6. General Parameters and Modules", Collapse section "22. Primary Domain Controller (PDC) using tdbsam, 14.3.3.2. This will prevent errors from finding their way into the DNS database. $ORIGIN indicates a DNS node tree and will typically start a DNS zone file. Formatting Access Rules", Collapse section "17.2.1. Overview of File System Hierarchy Standard (FHS), 3.3. NSD, PowerDNS) are using the zone files only as a starting point to compile them into database format, see also Microsoft DNS with Active Directory-database integration. Features of Apache HTTP Server 2.0, 10.1.2. To put it simply, the DNS zone file is where the data of the DNS Zone is the file, so we can say that the DNS zone and the DNS zone file is one and the same. The record data field may consist of one or more information elements, depending on the requirements of each record type. The following example shows a very basic zone file. I use this example with permission from David Bullock of LAND-5. Such information elements are represented as fields separated by white space. We recommend using the nsd-checkzone tool to verify that you have a working zone. $ORIGIN is followed by a domain name to be used as the origin for subsequent relative domain names. Primary Domain Controller (PDC) using LDAP, 14.3.3.3. Module Interface", Collapse section "16.3.1. $INCLUDE is followed by a file name and optional origin domain name to be used when interpreting its contents (which are treated as if they appeared in the parent file, followed by a reset to the origin value preceding evaluation of the directive). Some server software automatically configures resource records for specially recognized domains or hostnames, such as localhost, but a customized zone master file may be used. will be appended to them. An example for manual configuration of the forward zone for localhost is the following: The corresponding reverse zone definition is: This file does not specify the origin so that it may be used for both IPv4 and IPv6 with this configuration: Similar zone master files may be created for the reverse resolution of the broadcast address and the null address. In our example, we'll be creating a domain called serverlab.intra. This format was originally used by the Berkeley Internet Name Domain (BIND) software package, but has been widely adopted by other DNS server software - though some of them (e.g. Common Security Threats in Computer Networks. However, when placed together in a single file, they become easier to understand. Finally, if a name at the start of a record is missed, the name from the previous entry gets used (This is why all three A records are equivalent). Pluggable Authentication Modules (PAM)", Expand section "16.2. Seen individually, directives and resource records can be difficult to grasp. A Domain Name System (DNS) zone file is a text file that describes a DNS zone. Origin and TTL. Domain Member Server", Expand section "14.3.3. Zone files contain information about a namespace and are stored in the named working directory (/var/named/) by default.Each zone file is named according to the file option data in the zone statement, usually in a way that relates to the domain in question and identifies the file as containing zone data, such as example.com.zone. For example, the zone file for the domain microsoft.com would be microsoft.com.dns and would be located in the directory \%SystemRoot%\System32\Dns.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'networkencyclopedia_com-banner-1','ezslot_5',126,'0','0'])};__ez_fad_position('div-gpt-ad-networkencyclopedia_com-banner-1-0'); A typical DNS server has at least three zone files:if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'networkencyclopedia_com-large-leaderboard-2','ezslot_0',127,'0','0'])};__ez_fad_position('div-gpt-ad-networkencyclopedia_com-large-leaderboard-2-0'); Windows 2000 gives you the option of integrating DNS withActive Directory. It contains the name of the zone, the e-mail address of the party responsible for administering the domain's zone file, the current serial number of the zone, the primary . MPM Specific Server-Pool Directives", Collapse section "10.5.9. Additional Resources", Collapse section "8.5. Network File System (NFS)", Collapse section "9. Samba Account Information Databases ", Expand section "14.6. Such zone files prevent a DNS server from referring to other, possibly external DNS servers. Migrating Apache HTTP Server 1.3 Configuration Files", Expand section "10.2.1. Additional Resources", Collapse section "18.7. This is always enabled for the named-compilezone command. TCP Wrappers Configuration Files", Collapse section "17.2. TCP Wrappers and xinetd", Expand section "17.2. Desktop Environments and Window Managers, 9.3.1. Files Related to SELinux", Expand section "21.2.2. For example, the zone file for the domain microsoft.com would be microsoft.com . A Reverse zone allows DNS to convert from an address to a name. Stand-alone Server", Expand section "14.3.2. Install Bind Chroot RPM. link to Common Security Threats in Computer Networks, It provides a more efficient mechanism for zone transfers through the domain replication process of Active Directory. Samba Distribution Programs ", Collapse section "14.8. Email Program Classifications", Collapse section "11.2. An entry is composed of fields separated by any combination of white space (tabs and spaces), and ends at a line boundary except inside a quoted string field value or a pair of enclosing formatting parentheses. Example: With $ORIGIN example.com., any record where the host label field is not followed by a period, example.com. Migrating Directories from Earlier Releases, 14.3. Boot Loaders for Other Architectures, 1.3. Global Environment Configuration", Expand section "10.2.2. Configuration Directives in httpd.conf", Expand section "10.5.9. Additional Resources", Expand section "14.1. SysV Init Runlevels", Collapse section "2. Additional Resources", Collapse section "10.9. Other names may be trademarks of their respective owners. Additional Resources", Collapse section "15.6. $GENERATE, a non-standard extension accepted by BIND and some other, This page was last edited on 29 November 2022, at 03:03. Additional Resources", Collapse section "11.6. The exportfs Command", Expand section "9.4. /etc/sysconfig/system-config-users, 4.2. . However, when placed together in a single file, they become easier to understand. Note that a reverse name resolution zone requires the first three blocks of the IP address reversed followed by .in-addr.arpa.This allows the single block of IP numbers used in the reverse name resolution zone file to be associated with the zone. The zone file was last changed on 27 April 2020; this was the second change made on that day. Any line may end with comment text preceded by a semicolon, and the file may also contain any number of blank lines. Additional Resources", Collapse section "19.7. Using rndc" 12.4.1. . SELinux Configuration Files", Expand section "21.3. Modules and Apache HTTP Server 2.0", Collapse section "10.2.4. This results in zone data being stored in Active Directory, which has advantages over traditional implementations of DNS in which zone data is stored in text files: You should generally use the Windows NT administrative tool calledDNS Managerto make changes to zone files on a DNS server running on Windows NT rather than modify these files directly by using a text editor such as Notepad. Configuration Directives for SSL", Expand section "10.9. named-compilezone is similar to named-checkzone, but it always dumps the zone contents to a specified file in a specified format.Additionally, it applies stricter check levels by default, since the dump output will be used as an actual zone file loaded by named.When manually specified otherwise, the check levels must at least be as strict as those specified in the named configuration file. It contains the name of the zone, the e-mail address of the party responsible for administering the domains zone file, the current serial number of the zone, the primary nameserver of the zone, and various timing elements (measured in seconds). 7. A Domain Name System (DNS) zone file is a text file that describes a DNS zone. SOA Record The $ORIGIN is followed by the zones Start Of Authority (SOA) record. This file contains the mapping between the domain name and IP address. Mail Transport Agents", Collapse section "11.3. A zone file is a text based file with a format defined in RFC 1035 and 1034 and is stored on a DNS server (name server). Procmail Recipes", Collapse section "11.4.2. Differences between iptables and ipchains, 18.3. For example: an address record (type A for IPv4, or type AAAA for IPv6,) maps the domain name from the first field to an IP address in the record data; a mail exchanger record (type MX) specifies the Simple Mail Transfer Protocol (SMTP) mail host for a domain. For the exact structure we refer you to the wiki page.Note that all records must Fully Qualified Domain Names (FQDNs) which adds a . The ttl field specifies the number of seconds after which a caching client must discard the record and perform a new resolution operation to obtain fresh information. named-checkzone command syntax. zone "serverlab.intra" IN { type master; file "serverlab.intra.db"; allow-query { any; }; }; Defines the role of this server for the zone. Lightweight Directory Access Protocol (LDAP)", Expand section "13.3. Top-level Files within the proc File System", Collapse section "5.2. They are stored in the named working directory located in /var/named/ by default, and each zone file is named according to the file option in . MinSpareServers and MaxSpareServers, 10.5.9.5. A zone file is a text file that describes a DNS zone. Common Statement Types", Expand section "12.5. Packaging Changes in Apache HTTP Server 2.0, 10.1.3. OpenLDAP Setup Overview", Collapse section "13.6. In the event of an error, the secondary name server attempts synchronization again after 3 hours (3600 seconds). Documentation For First-Time Linux Users", Expand section "1. FHS Organization", Expand section "4. Introduction to Samba", Collapse section "14.1. It is useful for checking zone files before configuring them into a name server. Additional Resources", Expand section "12. Mail Access Protocols", Expand section "11.2. Securing Communication", Expand section "11.6. Interface Configuration Files", Expand section "8.5. filename : The name of the zone file. Domain Security Mode (User-Level Security), 14.4.4. File format. Backup Domain Controller (BDC) using LDAP, 14.3.3.4. Reverse Name Resolution Zone Files 12.4. Secure Read/Write File and Print Server, 14.3.2.1. Additional Resources", Collapse section "16.8. Zone files contain the IP and name data, MX records and other service records. The sysconfig Directory", Collapse section "4. TCP Wrappers and xinetd", Collapse section "17. The /etc/named.conf file establishes the server as a master, slave, or cache-only name server. Apache HTTP Server 2.0", Expand section "10.2. Mail Delivery Agents", Expand section "11.4.2. Configuration Directives for SSL, 10.8.2. FTP and Web services, available at the standard, Expand section "2. Dynamic Shared Object (DSO) Support, 10.2.1.4. Engage with our Red Hat Product Security team, access security updates, and ensure your environments are not exposed to any known security vulnerabilities. A real domain example. Additional Resources ", Collapse section "21.3. This is in contrast to relative domain names, where the origin gets appended (so in the example below, www gets expanded to www.example.com.). Migrating Apache HTTP Server 1.3 Configuration Files", Collapse section "10.2. Create a New Forward Lookup Zone. Samba Server Types and the smb.conf File ", Expand section "14.3.1. Additional Resources ", Collapse section "14.9. NFS Client Configuration Files", Collapse section "9.4. Definition of Zone File (DNS) in Network Encyclopedia. These records identify which name server is responsible for a given zone, timing parameters forzone transfersbetween name servers, IP address to hostname mappings for hosts within the domains over which the zone file is authoritative, and so on. Migrating Apache HTTP Server 1.3 Configuration Files, 10.2.1.3. The secondary name server undertakes changes from the primary name server every 24 hours (TTL = 86,400 seconds; Time To Live). Files Related to SELinux", Collapse section "21.2. -i mode: Performs post load zone integrity checks. Below is an example of a zone file (source Wikipedia): In order for the data in the zone file to be correctly processed, specific guidelines must be observed, else DNS cannot function properly (or the client will . Global Environment Configuration", Collapse section "10.2.1. Desktop Environments and Window Managers", Expand section "7.3. Process Directories", Collapse section "5.3.1. to the domain name. The /etc/sysconfig/selinux Configuration File. To have multi-line resource records opening and closing brackets can be used to ignore linebreaks. In addition to the in.named daemon, DNS on a name server consists of a boot file called named.conf, a resolver file named resolv.conf, and four types of zone data files.. Names of DNS Data Files. Windows NT4-based Domain Member Server, 14.3.3.1. NFS Server Configuration", Collapse section "9.3. PAM Configuration Files", Expand section "16.3. Modules and Apache HTTP Server 2.0, 10.2.4.5. Event Sequence of an SSH Connection", Collapse section "20.3. Options Used within iptables Commands", Collapse section "18.3. Seen individually, directives and resource records can be difficult to grasp. The zone file contains mappings between domain names and IP addresses and other resources, organized in the form of text representations of resource records (RR). Documentation For First-Time Linux Users, 1.2.2.1. Similarly, use the DNS console in Windows 2000 to administer the zone files instead of editing them directly. Log In Options and Access Controls, 16. The record type field is an abbreviation for the type of information stored in the last field, record data. Samba Security Modes ", Collapse section "14.4. introducing citations to additional sources, https://en.wikipedia.org/w/index.php?title=Zone_file&oldid=1124514820, Short description is different from Wikidata, Articles needing additional references from November 2020, All articles needing additional references, Creative Commons Attribution-ShareAlike License 3.0. Additional Resources", Expand section "11.1.1. The reverse mapping file name uses the subnet number and .rev, that is, if the zone is '23.168. . You need to use named- checkzone command as zone file validity checking tool. Additional Resources ", Expand section "15.1. File System Structure", Expand section "3.2. A zone file can be a DNS master file or a file authoritatively describing a zone. Samba Network Browsing ", Expand section "14.7. Once you've made a change to the zone file BIND9 will need to be restarted for the changes to take effect: sudo /etc/init.d/bind9 restart. The File Transport Protocol", Expand section "15.4. What is Kerberos? MPM Specific Server-Pool Directives", Expand section "10.5.66. They also contain glue data that connects them to the other DNS servers. SysV Init Runlevels", Collapse section "1.4. Note that all records must Fully Qualified Domain Names (FQDNs) which adds a . In this example the FQDN is: example.com.. The file usually contains A record, MX record, domain name, mail servers, nameservers details and so on. The arguments of the secondary directive are the origin of the zone, the IP address of the zone's primary server, and the file name where the zone file is to be stored. Altering xinetd Configuration Files, 17.4.3.3. Securing Communication", Collapse section "11.5.1. Main Server Configuration", Collapse section "10.2.2. Files in the /etc/sysconfig/ Directory", Expand section "4.3. The proc File System", Expand section "5.1. Example Zone File 12.3.4. Informational or Debugging Options, 11.4.2.1. Apache HTTP Server", Expand section "10.1. Each line of this file will contain one and only DNS record, it can't contain two records or more. MPM Specific Server-Pool Directives, 10.5.9.4. PAM and Device Ownership", Expand section "16.8. For the exact structure we refer you to the wiki page. A zone file is a text-based file stored in a DNS server. Altering xinetd Configuration Files", Expand section "17.5. Domain Controller", Collapse section "14.3.3. For students, educators or IT professionals. Files in the /etc/sysconfig/ Directory, 4.1.35. Additional Resources", Expand section "13. Additional Resources", Collapse section "2.9. The mod_auth_dbm and mod_auth_db Modules, 10.5. Domain Member Server", Collapse section "14.3.2. The Secure Web Server Virtual Host, 11.3.1.2. Additional Resources", Collapse section "22.6. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'networkencyclopedia_com-medrectangle-4','ezslot_3',114,'0','0'])};__ez_fad_position('div-gpt-ad-networkencyclopedia_com-medrectangle-4-0');A typical zone file might look something like this: On Microsoft Windows NTbased and Windows 2000based servers running theDNS Server services(and hence configured to operate as name servers for the network), the names of the zone files are similar to the names of the domains over which they have authority, but they have the .dns extension appended to them. Network File System (NFS)", Collapse section "9.1.2. Define a new domain. Interface Configuration Files", Collapse section "8.2. About Us Contact Page | Privacy Policy | Terms and Conditions. Email Program Classifications", Expand section "11.3. Additional Resources", Collapse section "17.5. The format of a zone file is defined in RFC1035 (section 5) and RFC1034 (section 3.6.1). Create Reverse Zone File. Overview of File System Hierarchy Standard (FHS)", Collapse section "3.2. A Start Of Authority record is required for each zone. WINS (Windows Internetworking Name Server), 15.4.1. Dumps zone file in canonical format. var cid='7402647023';var pid='ca-pub-3322332537501269';var slotId='div-gpt-ad-networkencyclopedia_com-medrectangle-3-0';var ffid=2;var alS=2021%1000;var container=document.getElementById(slotId);container.style.width='100%';var ins=document.createElement('ins');ins.id=slotId+'-asloaded';ins.className='adsbygoogle ezasloaded';ins.dataset.adClient=pid;ins.dataset.adChannel=cid;if(ffid==2){ins.dataset.fullWidthResponsive='true';} Search and browse thousands of terms and acronyms related to computer networks. For example, an address record only requires an address, while a mail exchanger record requires a priority and a domain name. PAM Configuration Files", Collapse section "16.2. The Channel Bonding Module", Collapse section "22.5.2. Articles posted after being checked by editors. Dyns DNS software only works with Internet (IN) class records and omits this information for efficiency purposes. On this page we give an example of a basic zone file and its contents. Oracle and Java are registered trademarks of Oracle and/or its affiliates. Active Directory Domain Member Server, 14.3.2.2. SELinux Configuration Files", Collapse section "21.2.2. Additional Resources", Collapse section "19.1. In this article, we will explain the most common security threats in computer networks. Reverse Name Resolution Zone Files, 13. . General Parameters and Modules", Expand section "22.5. Some name servers, including BIND, also require at least one additional NS record. Advanced Features of BIND", Expand section "12.7. Process Directories", Expand section "5.5. Introduction to Samba", Expand section "14.2. Additional Resources", Expand section "9. Top-level Files within the proc File System, 7.2. Using rndc Expand section "12.4. Any host labels below the origin will append the origin hostname to assemble a fully qualified hostname. There is very little difference between this example and a standard zone statement, except for the zone name. On Microsoft Windows NT-based and Windows 2000-based servers running the DNS Server services (and hence configured to operate as name servers for the network), the names of the zone files are similar to the names of the domains over which they have authority, but they have the .dns extension appended to them. 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